[paulwl]

Re: metal clarinet mouthpiece

Crystal too.

And yes, there has been at least one metal clarinet mouthpiece, made by Selmer for their metal clarinets in the 1930s. Sounds fine, but looks totally lame-o on a nonmetal horn.

 

[paulwl]

The heaviest metal models I know of are the Armored Conns of the late '20s - metal cladding over rubber core. Mine weighs nearly 2 lb - too heavy for its specially designed thumbhook (metal frame + cork inlay), which cracked.